If you recall the Diet Coke/Mentos phenomenon, you already know Fritz Grobe and Stephen Yoltz, even if you don't know their names. They're the geniuses behind the theater company Eepybird.

Geeks Are Sexy has a two-part interview with Grobe and Yoltz about how they took six months to develop the Bellagio Fountain routine for their "Experiment #137" video and what went into the creation of their "Sticky Notes Experiments" video the next year.

You'll also see them do the Diet Coke/Mentos routine in front of a live audience at the Maker Fair! Link